package com.BlcokingQueue;

import java.util.concurrent.BlockingQueue;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.TimeUnit;

/*
* 同步队列
* 和其他的BlockingQueue不一样，SynchronousQueue 不存储元素
* put 了一个元素，必须从里面先take取出来，否则不能再put进去值
* */
public class SynchronousQueueTest {

    public static void main(String[] args) {

        //同步队列
        BlockingQueue<String> blockingQueue = new SynchronousQueue<>();

        new Thread(()->{

            try {
                System.out.println(Thread.currentThread().getName()+"put 1");
                blockingQueue.put("1");

                System.out.println(Thread.currentThread().getName()+"put 2");
                blockingQueue.put("2");

                System.out.println(Thread.currentThread().getName()+"put 3");
                blockingQueue.put("3");

            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        },"T1").start();

        new Thread(()->{
            try {
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName()+"get"+blockingQueue.take());
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName()+"get"+blockingQueue.take());
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName()+"get"+blockingQueue.take());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        },"T2").start();
    }
}
